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How to check if the string is empty?
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From PEP 8, in the “Programming Recommendations” section:
For sequences, (strings, lists, tuples), use the fact that empty sequences are false.
So you should use:
if not some_string:
or:
if some_string:
Just t...
What does $.when.apply($, someArray) do?
...wn number of parameters. (In your code, you are saying that you data comes from a service, then that is the only way to call $.when)
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Parse a .py file, read the AST, modify it, then write back the modified source code
...ler machinery that can preserve comments in source when it's round tripped from source -> AST -> source.
The rope project may meet your needs if you want to do more refactoring like transforms.
The ast module is your other option, and there's an older example of how to "unparse" syntax trees...
Why is char[] preferred over String for passwords?
...ated the String, if another process can dump memory, there's no way (aside from reflection) you can get rid of the data before garbage collection kicks in.
With an array, you can explicitly wipe the data after you're done with it. You can overwrite the array with anything you like, and the password...
numpy: most efficient frequency counts for unique values in an array
... 1]])
Original answer:
you can use scipy.stats.itemfreq
>>> from scipy.stats import itemfreq
>>> x = [1,1,1,2,2,2,5,25,1,1]
>>> itemfreq(x)
/usr/local/bin/python:1: DeprecationWarning: `itemfreq` is deprecated! `itemfreq` is deprecated and will be removed in a future...
How to name and retrieve a stash by name in git?
...st
This will list down all your stashes.
To apply a stash and remove it from the stash stack, type:
git stash pop stash@{n}
To apply a stash and keep it in the stash stack, type:
git stash apply stash@{n}
Where n is the index of the stashed change.
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What's the best UML diagramming tool? [closed]
...e PlantUML, which is a free Java/Graphviz tool for generating UML diagrams from text. It's very likely that's the tool that this website uses behind the scenes.
– Cody Gray♦
Feb 3 '12 at 4:54
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What's the difference between identifying and non-identifying relationships?
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I will never use this to model that. The best answer is from "aqsa rao" below that states the following: "An identifying relationship means that the child table cannot be uniquely identified without the parent." Because your definition is adding unecessary semantic that could conf...
Determine the type of an object?
...f object you also have the:
__class__
attribute. Here is a sample taken from Python 3.3 console
>>> str = "str"
>>> str.__class__
<class 'str'>
>>> i = 2
>>> i.__class__
<class 'int'>
>>> class Test():
... pass
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>>> a = Tes...
How to install Boost on Ubuntu
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It is easy to build and install Boost from the sources, for example anycoder.wordpress.com/2014/04/28/building-boost
– Andrew Selivanov
Apr 29 '14 at 11:24
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